A $250 million project that opened this week at the Alliant Energy power plant in Sheboygan should result in better air quality and much less sulfur dioxide released into the air.

The Madison-based utility opened the new bag house and scrubber system on Wednesday, equipment installed on Edgewater's Unit 5.

The new technology is expected to reduce sulfur dioxide emissions by about 90 percent.

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"This air quality improvement project furthers our transition to providing cleaner and more efficient energy to our customers," said John Larsen, president of Alliant Energy's Wisconsin utility.

The project employed about 300 workers during the installation. It's the second major air quality improvement project at Edgewater Unit 5, the first coming in 2012 when a selective catalytic reduction system was installed to reduce nitrogen oxide.

Alliant Energy's air quality improvement projects at the company's largest generating stations are part of the overall plan moving the utility to cleaner energy, with the plan including retiring older, less efficient facilities and building the Riverside plant's expansion near Beloit, using natural gas as fuel.

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